Complete absence of isotope effect in YBa/sub 2/Cu/sub 3/O/sub 7/: Consequences for phonon-mediated superconductivity
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
YBa/sub 2/Cu/sub 3/O/sub 7/ has been prepared with enriched /sup 135/Ba, /sup 138/Ba, /sup 63/Cu, and /sup 65/Cu isotopes. The superconducting transition temperature T/sub c/ is found to be insensitive to the mass of the Ba and Cu atoms. This result, when combined with earlier findings of no T/sub c/ shift for oxygen-isotope substitution or rare-earth substitution, demonstrates the complete absence of an isotope effect in YBa/sub 2/Cu/sub 3/O/sub 7/. The consequences of these results for the applicability of phonon-mediated electron pairing mechanisms are discussed.
- Research Organization:
- Department of Physics, University of California, Berkeley, California 94720
- OSTI ID:
- 6039557
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:7; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Observation of an oxygen isotope effect in YBa/sub 2/Cu/sub 3/O/sub 7/
Isotopic and isomorphic substitution of YBa/sub 2/Cu/sub 3/O/sub 6/ and YBa/sub 2/Cu/sub 3/O/sub 7/: Far-infrared spectroscopy and assignment of phonons
Journal Article
·
Thu Jun 01 00:00:00 EDT 1995
· Physical Review, B: Condensed Matter
·
OSTI ID:55100
Observation of an oxygen isotope effect in YBa/sub 2/Cu/sub 3/O/sub 7/
Journal Article
·
Mon Sep 14 00:00:00 EDT 1987
· Phys. Rev. Lett.; (United States)
·
OSTI ID:6254782
Isotopic and isomorphic substitution of YBa/sub 2/Cu/sub 3/O/sub 6/ and YBa/sub 2/Cu/sub 3/O/sub 7/: Far-infrared spectroscopy and assignment of phonons
Journal Article
·
Wed Nov 30 23:00:00 EST 1988
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6619464
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH ISOTOPES
ALKALINE EARTH METAL COMPOUNDS
BARIUM 135
BARIUM 138
BARIUM COMPOUNDS
BARIUM ISOTOPES
BARIUM OXIDES
CHALCOGENIDES
COPPER 63
COPPER 65
COPPER COMPOUNDS
COPPER ISOTOPES
COPPER OXIDES
DAYS LIVING RADIOISOTOPES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPE EFFECTS
ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIOISOTOPES
STABLE ISOTOPES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH ISOTOPES
ALKALINE EARTH METAL COMPOUNDS
BARIUM 135
BARIUM 138
BARIUM COMPOUNDS
BARIUM ISOTOPES
BARIUM OXIDES
CHALCOGENIDES
COPPER 63
COPPER 65
COPPER COMPOUNDS
COPPER ISOTOPES
COPPER OXIDES
DAYS LIVING RADIOISOTOPES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPE EFFECTS
ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIOISOTOPES
STABLE ISOTOPES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES